Turpentine-extractor.



Patented July MEM.

ff/Mm Y Hormm J. M. HLLARD. TUBPBNUNE EXTRAGTOR.

APPLGAlON FHBB JAN.11,1913.

ENT FFICEf JAMES M. HILLARD,OF

TURPENTINEEXTRACTOB- Specification of Letters Patent.

Application filed January 11, 1913. Serial No. 741,491. i

To all whom it may concern:

Be it known that I, JAMES M. HILLARD, ya citizen of the United States, residing at Gulfport, in the county of Harrison and State of Mississippi, have invented new and useful Improvements in Turpentine-Extrac-. tors, of which` the following is a specification.

This invention relates to a turpentine retort or extractor, and one of its objects is to provide a retort for extracting turpentine and by-products4 from wood which may ,be conveniently charged and quickly and conveniently emptied of the refuse at the end of the extracting operation.

A furtherv object of the invention is to provide a retort or extractor having means for circulating steam through the mass of wood, and for agitating and feeding the wood in such manner as to insure the/rapid and thorough distribution of the steam therethrough and the extraction of they constituents of the'wood.

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawings, in which Figurel is a vertical longitudinal'section through anextractor constructed in accordance with my invention. Fig..2.is a horizontaltransverse.section on the line ,2f-2 of Fig. 1. Fig. 3 is a similar view on the line 3-3 of Fig.v 1.

.Referring to the drawing, 1 designates the cylindrical body of the extractor, which is provided with a removable frusta-conical base portion 2, the proximate edges of said body and base portion being provided with flanges for the passage of securing bolts 3,

vwhereby they .are detachably connected.

The extractor 1s supported by a suitable frame or stand 1, and has at itsl upper end an outlet 5 for the passage of the vapors. to a suitable condenser. At the top and one side of the retort is also a charging Ainlet 6 communicatingwith a feed pipe or chute 7 leading from a conveyer 8, whereby the material to be treated may be conveyed tothe extractor from a hog or storage room.

"A door 9 is provided for closing the charg ing inlet during the .operation Vof the eX- tractor.

The frusto-conieal base 2 is provided with an inverted frusto cornealv screen- 10, the

` of vertically opening in which is normally closed afi Patented July 14:, 19141;

screen l1 carried by adumping doorv 12;l This door 12 is provided with a flange .13 f secured to a'ilange 14C at the lower end-ofthe 'base portion 2 by bolts.' 15. `U'liedoorl 1 2 has a depressed portion. forming apcollec'-v tlon space 'lprovided with a valved drain A outlet 17 f0r the tar andother heavier 'prod ucts, which may able receptacle.- The door is adapted, when be drawnl od into asuit' i vall except one of the bolts are removed, to f be swung outwardly and laterally to uncover the opening in the portion 2and permit of.

the discharge of the refuse wood pulp into a receptacle 18, from, which ay conveyormay `carry the sainel to a suitable point/of charge.

The retort body 1 isv closed.'atitsippeffi end by a head 19 to which aresccured bearing and stufling boxes y2O, and arrangedl within the bottom 2 is a spider or cross piecey 21 provided with bearings 22.l A pairdisposed shafts 23 and 24 :is V arranged within the cylinder on'opposite' sides of its longitudinalenter, said shafts b eing journaled for rotation in the respective pairs of, upper and lower .bearings 20H L 'and 22. The lower ends .ef the shafts. ex- 'l tend down through the screen 10 ,and upon the exterior of lthe screen 11 into the collection space orchamber125-formed by said screens, and into which lthe tar freed from the wood gravitates and thence passes into f the collection space 16 for discharge.- shafts are suitably closed 'at their'upper ends, but are open at their lower ends for the inlet of steam and are provided at intervals lthroughout their length with ports 26y for `the injection of the steam intov the inass of wood. Carried by the shaftsl are agitators 27 and 28, whereby when said shaftsv are rotated the material will be kept thoroughly loosened upfor the passage of steaml therethrough. Une of the agitators is in the form of a worm' adapted to communicate an tip# wardl feed motion to the wood,- while the other agitator is in the form of a worm I. I

adapted to communicate downward motion to the wood, whereby both a circular and up and down motion will be transmitted to loosen up the wood in the most eiicient manner and insure the thorough exposure ofv al1 portions of the wood to the action lof the steam.

los

A valve steam supply pipe 29.. leading passes up 'through the screen into the body of the extractor and throughthe hollow shafts 23 and 24, through the ports'26 of which it discharges throughout the area of the mass of wood. The turpentine and other volatile constituents of the Wood are therefore rapldly and thoroughly-driven oif and discharged through the outlet 5 to the condenser, while "the tar and other heavier by-prod vucts are freed and kept in a liquid State and gravitate downward for discharge. 'Ih'e upf per ends ofthe shafts 23 and 24 carry gears 30 and 3l, which mesh with a pinion 32 on a shaft 33, which also carries a beveled gear 34 receiving motionV fromv a beveled pinion 35 on a driveshaft 36 provided with a pulley 37 or other means for Vreceiving power from any suitable source.- C

In operation, it will bef understoodthat the'dumping door 12 and valve in the outlet 5 are closed, while the door 9 is opened and lthe chute 7 adjusted for the admission of the .wood .to be treated, into the extractor. Then the extractor isl fully charged, the chute is removed and the door 9 closed, after'whichv the valve inthe. pipe 29 is opened for the supply'of steam to the extractor, while at the same time the shaft 36 is set in motion to rotate the steam injecting and wood agitating pipes, the operation of which will be apparentv from the foregoing description.- It will be seen that as the mass of wood is kept thoroughly agitated, while steam is circulated Athroughout the same, the turpentinefand-other'constituents will be quickly driven olf-and a complete extraction of all the tur-l pentine and ley-products capableof extraction effected. At the end of the extracting operation, the .hea-vier ley-productsl are driven off, the supply of steam 'out off, and

the door 12 releasedand swung open for the discharge of the refuse, the agitators being meanwhile kept in action so that .all the refuse Wood will be loosened up and discharged.

Hence it will be understood that the retort may be quickly charged and as quickly discharged of its contents with a minimum expenditure of time and labor. I claim:-

l. An extractor-of the character described -comprising a retort having a vapor outlet at its upper end and a refuse outlet at its lower end, means at the latter named end for the discharge Vof the heavier products, vertically disposed hollowfshafts within the retort provided with steam discharge portsand spiral agitators, and means f or simultaneously rotating said shafts in opposite directions.

2. ,An extractor of the character described comprising a retort having a vapor outlet at its upper end anda refuse outlet at its lower end, an annular screen in said retort above said refuse outlet, a door for closing limpart an upward motion-to the material and the other agitator blade, a downward l vmotion to the material. l

In testimony whereof I aiiix my signature in presence of two witnesses.

- JAMES M. HILLARD. Vitnesses': l GEO. E. S'roNn,

GENnvrnvn G. RUSSELL. 

